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Full-size SCR denitration catalyst evaluation system and method

A denitrification catalyst and evaluation method technology, applied in the field of full-scale SCR denitrification catalyst evaluation system, can solve the problems of difficult control ratio, low degree of automation, long time, etc., to achieve the effect of ensuring accuracy, realizing automation and reducing errors

Active Publication Date: 2019-04-26
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The evaluation system still needs to manually adjust the flow ratio of each component in the simulated flue gas, and the degree of automation is not high. The results are not accurate and the efficiency is low
[0012] At present, the existing catalyst evaluation system basically relies on manual operation, lacking on-line monitoring and automatic control system
However, the test of SCR denitrification catalyst takes a long time. Relying on manual operation not only wastes time, but also makes the activity test of the catalyst inaccurate and the test result is unstable.

Method used

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  • Full-size SCR denitration catalyst evaluation system and method
  • Full-size SCR denitration catalyst evaluation system and method
  • Full-size SCR denitration catalyst evaluation system and method

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Embodiment 1

[0066] The full-scale SCR denitrification catalyst evaluation method provided by the specific embodiments is used to evaluate the SCR denitrification catalyst suitable for sintering flue gas. Three SCR denitrification catalysts are placed in the full-scale denitration reactor. The catalyst is a VW-Ti system and the size is 150mm×150mm×1000mm; simulated sintering flue gas temperature is 200℃, flue gas flow rate is 100m 3 / h, the ratio of ammonia to nitrogen is 1, the ratio of each gas component in the simulated sintering flue gas and the ratio of each gas component in the actual sintering flue gas are shown in the following table:

[0067]

[0068] By analyzing the detection results, the NO detected by the evaluation method provided in this embodiment x The conversion rate is 90%. In the actual SCR denitration reaction process, NO x The conversion rate was 86.3%, and the relative error was 4.3%.

Embodiment 2

[0070] The full-scale SCR denitrification catalyst evaluation method provided by the specific embodiments is used to evaluate the SCR denitrification catalyst suitable for alumina roasting flue gas. Three SCR denitrification catalysts are placed in the full-scale denitration reactor, and the catalyst is VW-Mo-Ti System, size 150mm×150mm×1000mm; simulated alumina roasting flue gas temperature is 300℃, flue gas flow rate is 100m 3 / h, the ratio of ammonia to nitrogen is 1, the ratio of each gas component in the simulated alumina roasting flue gas and the actual alumina roasting flue gas are shown in the following table:

[0071]

[0072] By analyzing the detection results, the NO detected by the evaluation method provided in this embodiment x The conversion rate is 88%. In the actual SCR denitration reaction process, NO x The conversion rate was 84%, and the relative error was 4.8%.

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Abstract

The invention provides a full-size SCR denitration catalyst evaluation system and method. The system comprises a simulated flue gas supply unit and an SCR denitration unit which are sequentially connected with each other. The system also comprises a control unit, wherein both the simulated flue gas supply unit and the SCR denitration unit are connected into the control unit. The method comprises the steps of introducing simulated flue gas into an SCR denitration unit, testing the denitration activity and resistance of a catalyst through an online flue gas detection device in the control unit,and recording and analyzing a test result; the doping proportion of each gas component in the simulated flue gas is automatically adjusted by the control unit according to a preset flue gas type. By connecting the simulated flue gas supply unit and the SCR denitration unit into the control unit, the flow rate of each gas component can be automatically and precisely adjusted according to the presetflue gas type, errors caused by manual operation are avoided, and the accuracy, reliability and repeatability of the evaluation result are guaranteed to the greatest extent.

Description

Technical field [0001] The invention belongs to the field of catalyst performance evaluation, and relates to an SCR denitration catalyst evaluation system and method, in particular to a full-scale SCR denitration catalyst evaluation system and method. Background technique [0002] Nitrogen oxides (NO x ) Is one of the most important air pollutants, it will cause acid rain, greenhouse effect and ozone layer destruction and other environmental problems, bring serious harm to human health and social development, control NO x The emission is the focus of air pollution control and haze reduction. Therefore, NO x Emission control technology is an important content in the field of my country's atmospheric environment, and it is also an important breakthrough in current environmental management. The Chinese Academy of Environmental Planning predicts that my country will become the world's largest emitter of nitrogen oxides around 2020. Selective catalytic reduction (SCR) is the main met...

Claims

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Application Information

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IPC IPC(8): G01N31/10
CPCG01N31/10
Inventor 朱廷钰刘霄龙张诚李二伟宁汝亮
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI